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Efficient and Robust Semi-supervised Learning Over a Sparse-Regularized Graph

  • Hang SuEmail author
  • Jun Zhu
  • Zhaozheng Yin
  • Yinpeng Dong
  • Bo Zhang
Conference paper
Part of the Lecture Notes in Computer Science book series (LNCS, volume 9912)

Abstract

Graph-based Semi-Supervised Learning (GSSL) has limitations in widespread applicability due to its computationally prohibitive large-scale inference, sensitivity to data incompleteness, and incapability on handling time-evolving characteristics in an open set. To address these issues, we propose a novel GSSL based on a batch of informative beacons with sparsity appropriately harnessed, rather than constructing the pairwise affinity graph between the entire original samples. Specifically, (1) beacons are placed automatically by unifying the consistence of both data features and labels, which subsequentially act as indicators during the inference; (2) leveraging the information carried by beacons, the sample labels are interpreted as the weighted combination of a subset of characteristics-specified beacons; (3) if unfamiliar samples are encountered in an open set, we seek to expand the beacon set incrementally and update their parameters by incorporating additional human interventions if necessary. Experimental results on real datasets validate that our algorithm is effective and efficient to implement scalable inference, robust to sample corruptions, and capable to boost the performance incrementally in an open set by updating the beacon-related parameters.

Keywords

Semi-supervised learning Beacon Sparse representation Online learning 

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Copyright information

© Springer International Publishing AG 2016

Authors and Affiliations

  • Hang Su
    • 1
    Email author
  • Jun Zhu
    • 1
  • Zhaozheng Yin
    • 2
  • Yinpeng Dong
    • 1
  • Bo Zhang
    • 1
  1. 1.State Key Lab of Intelligent Technology and Systems, Tsinghua National Lab for Information Science and Technology, Department of Computer Science and Technology, Center for Bio-Inspired Computing ResearchTsinghua UniversityBeijingChina
  2. 2.Department of Computer ScienceMissouri University of Science and TechnologyRollaUSA

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